CN202077244U - Light-emitting diode (LED) flashlight manufactured by one battery - Google Patents
Light-emitting diode (LED) flashlight manufactured by one battery Download PDFInfo
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- CN202077244U CN202077244U CN2011201814441U CN201120181444U CN202077244U CN 202077244 U CN202077244 U CN 202077244U CN 2011201814441 U CN2011201814441 U CN 2011201814441U CN 201120181444 U CN201120181444 U CN 201120181444U CN 202077244 U CN202077244 U CN 202077244U
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Abstract
The utility model belongs to the technical fields of electron and light-emitting diode (LED) application and relates to an LED flashlight manufactured by one battery. The LED flashlight consists of a 1.5-volt battery, a direct current power filter circuit, a self-oscillation boosting switching power supply, a switch-on circuit, a switch-off circuit and light-emitting component LEDs, wherein the model number of a direct current conversion direct current boosting integrated circuit IC1 is MAZ757; and the light-emitting component LEDs are six high white LEDs. The working current of the traditional incandescent lamp flashlight with two batteries is far more than that of the LED flashlight; the consumed power of the common incandescent lamp flashlight is 7 to 9 times that of the LED flashlight; and the brightness of the common incandescent lamp flashlight is not better than that of the LED flashlight. 6 ultrahigh-brightness white LEDs can be lightened by one AA size alkaline battery or one AA size common battery, so the LED flashlight of the utility model is applicable to night illumination of families, camping, travelling and the like.
Description
Technical field
The utility model belongs to electronic technology and LED applied technical field, is the LED flashlight of making about a kind of of one batteries.
Background technology
Two traditional batteries incandescent lamp flashlight general work electric current 〉=240mA, and the flashlight operating current of making of LED only has 60mA, the power that the ordinary incandescent lamp flashlight is consumed is 7～9 times of LED flashlight power approximately, and luminous brightness also is not so good as the brightness of LED flashlight.In addition, effective operating voltage of incandescent lamp flash-light battery is much larger than the flashlight of making of LED.
To exist power consumption big in order to overcome two traditional batteries incandescent lamp flashlights, and the defective that brightness is low, the miniature flashlight of making of LED described in the utility model only uses No. 5 alkaline batteries of a joint or No. 5 common batteries of a joint, just can light 6 super brightness white light-emitting diodes, and after about 12 minutes, can close complete automatically, No. 5 common batteries of one joint generally can use more than 16 days, were applicable to very much at home, camped, night lighting such as out on tours.The flashlight of making of super brightness white light-emitting diode LED described in the utility model is a kind of energy-saving and environmental protection, economic, practical technical scheme, and what core parts adopted in the circuit is the MAX757 integrated circuit.
Below describe the correlation technique content that LED flashlight that usefulness one batteries described in the utility model makes relates in detail in manufacturing process.
The utility model content
Goal of the invention and beneficial effect: two traditional batteries incandescent lamp flashlight operating currents are much larger than the flashlight operating current of making of LED, the power that the ordinary incandescent lamp flashlight is consumed is 7～9 times of LED flashlight power approximately, and luminous brightness is also not as the LED flashlight.The miniature flashlight of making of LED described in the utility model only uses No. 5 alkaline batteries of a joint or No. 5 common batteries of a joint, just can light 6 super brightness white light-emitting diodes, is applicable to very much the house, camps, night lighting such as out on tours.Making flashlight with LED is a kind of energy-saving and environmental protection, economic, practical technical scheme, and what core parts adopted in the circuit is the MAX757 integrated circuit.
Technical characterictic: with the LED flashlight that a batteries is made, be made up of 1.5V battery, DC power supply filter circuit, self-oscillation booster switcher power supply, open circuit and shut-off circuit and light-emitting component LED, its feature comprises:
Self-oscillation booster switcher power supply is by DC converting direct current integrated circuit (IC) 1 and energy storage inductor L1, Schottky diode D1 and capacitor C 5 are formed, its connection features is: the end of connecting resistance R2 after 1 pin of DC converting direct current integrated circuit (IC) 1 links to each other with 4 pin, 6 pin of DC converting direct current integrated circuit (IC) 1 and the other end of resistance R 2, the end of potentiometer RP, the positive pole of the negative pole of Schottky diode D1 and electrochemical capacitor C5 links to each other, the negative pole connection circuit ground GND of 7 pin of DC converting direct current integrated circuit (IC) 1 and electrochemical capacitor C5,2 pin of DC converting direct current integrated circuit (IC) 1 connect the other end of potentiometer RP, one end of resistance R 1 and an end of capacitor C 2, the other end connection circuit ground GND of the other end of resistance R 1 and capacitor C 2,3 pin of DC converting direct current integrated circuit (IC) 1 connect an end of capacitor C 3 and an end of resistance R 3, the other end connection circuit ground GND of the other end of capacitor C 3 and resistance R 3,8 pin of DC converting direct current integrated circuit (IC) 1 connect the end of energy storage inductor L1 and the positive pole of Schottky diode D1, the anodal VCC of a termination circuit of inductance L 1;
The model of DC converting DC boosting integrated circuit (IC) 1 is MAX757;
The connection features of open circuit and shut-off circuit is: 6 pin of a termination DC converting direct current integrated circuit (IC) 1 of resistance R 5, the end of another termination push-button switch AN1 of resistance R 5, the end of the other end of push-button switch AN1, push-button switch AN2 links to each other with 5 pin of DC converting direct current integrated circuit (IC) 1, connection circuit ground GND behind the other end series resistor R6 of push-button switch AN2;
Light-emitting component LED is 6 white light-emitting diode LED1～LED6, its connection features is: the positive pole of 3 white light-emitting diode LED1, LED3 and LED5 is with the end of connecting resistance R7,6 pin of another termination DC converting direct current integrated circuit (IC) 1 of resistance R 7, the negative pole of 3 white light-emitting diode LED1, LED3 and LED5 connects the positive pole of 3 white light-emitting diode LED2, LED4 and LED6 respectively, and the negative pole of 3 white light-emitting diode LED2, LED4 and LED6 is with connection circuit ground GND.
The composition of other circuit and the connection features between the components and parts thereof
The connection features of timing circuit is: an end of capacitor C 4 links to each other with 5 pin of an end of resistance R 4 with DC converting direct current integrated circuit (IC) 1, the other end connection circuit ground GND of the other end of capacitor C 4 and resistance R 4.
1.5V the positive pole of battery links to each other with the anodal VCC of circuit.
1.5V the negative pole of battery links to each other with circuit ground GND.
The operation principle of circuit: DC converting direct current integrated circuit (IC) 1 is formed self-oscillatory booster switcher power supply with energy storage inductor L1, Schottky diode D1 and capacitor C 5 etc., the cell voltage of one joint 1.5V can be risen to 3.9V, for 6 white light-emitting diode LED1～LED6 of series-parallel system provide working power.Resistance R 7 is a current-limiting resistance, flows through the about 20mA of electric current of every LED of white, load total current≤60mA.
The monostable trigger of DC converting direct current integrated circuit (IC) 1 inside and output stage MOSFET field effect transistor and external circuit are formed the pulse-width modulation circuit of peak limiting electric current, the operating frequency of its Switching Power Supply is by the inductance value decision of ratio and the power output and the energy storage inductor L1 of input voltage and output voltage, and its frequency is about 180kHz.Output voltage is by the ratio decision of feedback potentiometer RP and resistance R 1, and wherein potentiometer RP is used for regulating the height of output voltage, and capacitor C 2 is for exchanging shunt capacitance.
5 pin of DC converting direct current integrated circuit (IC) 1 are former to be used for detecting battery low-voltage.When cell voltage is reduced to the 1.24V reference voltage of DC converting direct current integrated circuit (IC) 1 inside, the open-drain of inner field effect transistor, 1 pin that output 4 pin of DC converting direct current integrated circuit (IC) 1 are about to turn-off DC converting direct current integrated circuit (IC) 1 is pulled to low level, makes DC converting direct current integrated circuit (IC) 1 stop output.Because the cell voltage in the circuit has only 1.5V, so changing it into timing automatic closes complete, that is: when pushing button switch AN1, capacitor C 4 is charged to the output voltage that approaches DC converting direct current integrated circuit DC converting direct current integrated circuit (IC) 1 rapidly through resistance R 5, make the comparator upset of DC converting direct current integrated circuit (IC) 1 inside, then 1 foot of DC converting direct current integrated circuit (IC) 1 is pulled to high level by resistance R 4, so DC converting direct current integrated circuit (IC) 1 is started working, 6 white light-emitting diode LED1～LED6 are lighted.When unclamping key switch AN1, capacitor C 4 just begins through resistance R 4 discharges, approximately through 12 minutes, the both end voltage of capacitor C 4 drops to the reference voltage that is lower than DC converting direct current integrated circuit (IC) 1 inside, comparator output uprises, 1 pin current potential step-down of DC converting direct current integrated circuit (IC) 1, then DC converting direct current integrated circuit (IC) 1 stops output, and 6 white light-emitting diode LED1～LED6 extinguish.If the sensation timing is short partially, can suitably increase the resistance of resistance R 6.If think to close the light of finishing flashlight at any time, can click key switch AN2, capacitor C 4 is discharged rapidly through resistance R 6,6 white light-emitting diode LED1～LED6 extinguish at once.
Description of drawings
Embodiment
Circuit working schematic diagram and description of drawings according to the LED flashlight of making of a batteries shown in the accompanying drawing 1, and according to the annexation between the components and parts in the described each several part circuit of utility model content, and the components and parts technical parameter described in the execution mode requires to implement to realize the utility model; Below be that example is elaborated with a batteries.
The selection of components and parts and technical parameter thereof
IC1 is the DC converting DC voltage booster circuit, and its model is selected U.S. Maxim (U.S. letter) MAX757 that company produces for use, and this integrated circuit has 8 pins, is DIP dual inline type Plastic Package;
L1 is the energy storage inductor coil, and inductance value is 22mH, requires the operating current 〉=100mA of inductance;
D1 is a Schottky diode, parameters selection operating current 〉=1A;
Resistance uses metalfilmresistor, and power is 1/8W, and the resistance of resistance R 1 is: 10K Ω; The resistance of resistance R 2 is 1M Ω; The resistance of resistance R 3 is 10k Ω; The resistance of resistance R 4 is 10M Ω; The resistance of resistance R 5 is 10k Ω; The resistance of resistance R 6 is 10k Ω; The resistance of resistance R 7 is that 3.3 Ω, power are 1/2W; RP potentiometer, its resistance are 22k Ω;
C1, C5 are electrochemical capacitor, and its capacity is respectively 100 μ F/10V, 47 μ F/10V; C2, C3, C4 are electric capacity of the dacron, and its capacity all is 0.1 μ F;
LED1～LED6 is ￠ 5 super brightness white light-emitting diodes, requires technical parameter consistent as far as possible;
AN1, AN2 are one pole push-button switch open in usual.
The making of circuit and debugging
Very simple because of the circuit structure of the LED flashlight made of a batteries, make than being easier to, it is general that the physical connection of components and parts is correct as long as the components and parts performance of use is intact, circuit does not need to debug just can operate as normal.
Because DC converting direct current integrated circuit (IC) 1 is the COMS device, when welding, electric iron should be taked the measure of antistatic, otherwise is easy to damage the COMS device.Require wiring short as far as possible, more slightly, to reduce unnecessary line loss.
In circuit debugging, a batteries can be earlier with the adjustable stabilized voltage supply replacement of output current 〉=0.8A, and Schottky diode D1 cuts and can not use the ordinary silicon rectifier diode, otherwise the effect of boosting is bad and conversion efficiency will reduce significantly.Do not reach 60mA if find the electric current of output, whether the resistance that should detect resistance R 7 earlier changes, or directly with resistance R 7 short circuits; Whether the parameter that reexamines inductance coil L1 is normal, can change 1 operating current inductance coil of some greatly, or select 1 slightly smaller inductance coil of inductance value to try it.
The adjustment of circuit output voltage: the both end voltage that should make resistance R 7 is at 180～200mV, and the loaded work piece electric current is equivalent to the electric current of 56～60mA, if the excessive resistance that should suitably adjust potentiometer RP of electric current.
Claims (4)
1. a LED flashlight of making of a batteries is made up of 1.5V battery, DC power supply filter circuit, self-oscillation booster switcher power supply, open circuit and shut-off circuit and light-emitting component LED, and its feature comprises:
Self-oscillation booster switcher power supply is by DC converting direct current integrated circuit (IC) 1 and energy storage inductor L1, Schottky diode D1 and capacitor C 5 are formed, its connection features is: the end of connecting resistance R2 after 1 pin of DC converting direct current integrated circuit (IC) 1 links to each other with 4 pin, 6 pin of DC converting direct current integrated circuit (IC) 1 and the other end of resistance R 2, the end of potentiometer RP, the positive pole of the negative pole of Schottky diode D1 and electrochemical capacitor C5 links to each other, the negative pole connection circuit ground GND of 7 pin of DC converting direct current integrated circuit (IC) 1 and electrochemical capacitor C5,2 pin of DC converting direct current integrated circuit (IC) 1 connect the other end of potentiometer RP, one end of resistance R 1 and an end of capacitor C 2, the other end connection circuit ground GND of the other end of resistance R 1 and capacitor C 2,3 pin of DC converting direct current integrated circuit (IC) 1 connect an end of capacitor C 3 and an end of resistance R 3, the other end connection circuit ground GND of the other end of capacitor C 3 and resistance R 3,8 pin of DC converting direct current integrated circuit (IC) 1 connect the end of energy storage inductor L1 and the positive pole of Schottky diode D1, the anodal VCC of a termination circuit of inductance L 1;
The model of DC converting DC boosting integrated circuit (IC) 1 is MAX757;
The connection features of open circuit and shut-off circuit is: 6 pin of a termination DC converting direct current integrated circuit (IC) 1 of resistance R 5, the end of another termination push-button switch AN1 of resistance R 5, the end of the other end of push-button switch AN1, push-button switch AN2 links to each other with 5 pin of DC converting direct current integrated circuit (IC) 1, connection circuit ground GND behind the other end series resistor R6 of push-button switch AN2;
Light-emitting component LED is 6 white light-emitting diode LED1～LED6, its connection features is: the positive pole of 3 white light-emitting diode LED1, LED3 and LED5 is with the end of connecting resistance R7,6 pin of another termination DC converting direct current integrated circuit (IC) 1 of resistance R 7, the negative pole of 3 white light-emitting diode LED1, LED3 and LED5 connects the positive pole of 3 white light-emitting diode LED2, LED4 and LED6 respectively, and the negative pole of 3 white light-emitting diode LED2, LED4 and LED6 is with connection circuit ground GND.
2. the LED flashlight that usefulness one batteries according to claim 1 is made, the connection features of timing circuit is: an end of capacitor C 4 links to each other with 5 pin of an end of resistance R 4 with DC converting direct current integrated circuit (IC) 1, the other end connection circuit ground GND of the other end of capacitor C 4 and resistance R 4.
3. the LED flashlight that usefulness one batteries according to claim 1 is made, it is characterized in that: the positive pole of 1.5V battery links to each other with the anodal VCC of circuit.
4. the LED flashlight that usefulness one batteries according to claim 1 is made, it is characterized in that: the negative pole of 1.5V battery links to each other with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201814441U CN202077244U (en) | 2011-06-01 | 2011-06-01 | Light-emitting diode (LED) flashlight manufactured by one battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201814441U CN202077244U (en) | 2011-06-01 | 2011-06-01 | Light-emitting diode (LED) flashlight manufactured by one battery |
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| Publication Number | Publication Date |
|---|---|
| CN202077244U true CN202077244U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201814441U Expired - Fee Related CN202077244U (en) | 2011-06-01 | 2011-06-01 | Light-emitting diode (LED) flashlight manufactured by one battery |
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| Country | Link |
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| CN (1) | CN202077244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300361A (en) * | 2011-06-01 | 2011-12-28 | 刘喆 | LED (light emitting diode) electric torch manufactured by one battery |
-
2011
- 2011-06-01 CN CN2011201814441U patent/CN202077244U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300361A (en) * | 2011-06-01 | 2011-12-28 | 刘喆 | LED (light emitting diode) electric torch manufactured by one battery |
| CN102300361B (en) * | 2011-06-01 | 2013-10-09 | 何林 | LED (light emitting diode) electric torch manufactured by one battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20120601 |